From Longman Business Dictionaryindustry leaderˈindustry ˌleaderMARKETING1a company that is important in a particular industry because it has the highest level of sales, the best products etcWe are now a mature company and an industry leader.2a person who is very important in an industry or in businessIndustry leaders said the revised proposal would do little to soften the economic blow to the Northwest. → leader